Transfer sheet and method of making same



Aug. '10 1926.

Filed Sept. 17, 1924 ENTOR A RNEY Patented Aug. 10, 1926.

UNITED sTA rEs PATENT OFFICE. I

'WIIl'THROP STANLEY LAWRENCE, OF BROOKLYN, NEW YOBE,

assrenon 'ro mum- GBAIPH COMPANY, OE NEW YORK, N. Y., .A CORPORATION OFNEW YORK.

TRANSFER SHEET AND METHOD OF MAKING My invention relates to a new andim--.

proved transfer sheet and a new and improved method of making the same.

One of the objects of my'invention is to provide a new and improvedtransfer sheet a minimum of expense and without the need in whichthe-transfer will be printed upon the paper forming the backing or baseof the transfer, withthe use of the ordinary reversed type now' employedby printers, with of making any special type for this purpose. 1 Anotherobject of my invention is to provide a new and improved method ofmaking-a transfer sheet whereby the proper registration of thetransfer'marking upon the article upon which the transfer is to be madecan be facilitated. t

Another object of my invention is to pro- .vide a new "and improvedtransfer sheet which will securequick and accurate registration of thetransfer markin upon the article upon which the transfer 1s to be made.Other objects of my invention will be set forth in the followingdescription and drawings which illustrate the preferred'.embodimentthereof, it being understood that the above statement of the objects ofm invention is intended as a general exp anation thereof, and not as alimitation thereof.

Fig. 1 diagrammatically shows the appar'atus used for carrying out mymethod.

I Fig. 2 shows the top of the transfer sheet formed by my new andimproved method. Fig. 3 shows the reverse of the said transfer sheet.

My invention is particularly directed to that type of transfer in whichthemarking is made upon a paper base, and the transfer marking isadapted to be released from the base when heat and pressureare applied.Of course, any equivalent material could be used for said paper base.Such transfers are very useful for marking linens and other fabrics,

bottom of the transfer base in reverse, and

" after the transfer is completed is impressed directly on thearticle-to be marked,

I moist ink of the imprint 5, whilethe ex- For the purposes ofthis'specifica-- Application am September 17, 1924.v Serial m; 788,186.

The base of the transfer ink, which may be any suitable indelibleprinting ink containing fast colors and no substances soluble in water,is applied upon the type 3 in the ordinary manner. In the first movementof the type 3, which maybe of the ordinary and regular kind, theprinting does not take place upon the paper base 2 of the transfer, butinstead an. imprint is made upon the tympan 1 which may be made of anysuitable material such as paper or the like, so that the impression ormarking made by the type 3, which is coated with the ink in any suitablemanner, remains upon the surface of the tympan 1. At the next movementof the type. 3, the paper 2 is inserted in the usual manner so that animprint is simultaneously formed upon both sides of the paper, the saidimprints being in exact registration with each other. The direct imprint4 upon the top of the base can be. read in the ordinary manner and thisserves asa guide for transferring the reverse printing 5 upon the bottomof the paper, to the article, fabric, leather and the like upon whichthe transfer is to be made. This method permits the use of ordinaryreverse type. Otherwise, it would be necessary to make special type.

After the imprint 5 has been formed upon the rear of the paper 2, it isdusted with a finely powdered composition while the ink is Wet, so thatthis composition clings to the 'cessgcan 'be removed from, the paper2 bytapping the said papers By this method this composition clings only tothe hues of the imprint 5, after it has been fused and allowed to set.

Various powdered compositions can be used dependent upon the size of thetype employed, but for 12 to 36 point type a suitable powderedcomposition may include the following I Dyestuffs soluble in oil such asindulines including the nigrosines, Victoria blue B base, oil redpwhichis a red dyefbasic in nature and'soluble in mineral oil, can be in- -1oocorporated w in Y compositions containing 2. neutral resin such asparacoumarone resin with pigments which are resistant to alkalinewashing fluids. -Substances which as alpha nitro-naphthalenecan be addedto 1 5 give increased stability and resistance to as. I

the washing fluid wherebythe dye which has been used has an affinity forthe fibre of. the fabric on which the impression is made When certaindyes are used, as Victoria blue B haw, the slow decomposition or removalof the carrying medium of the ink on washing causes the dye or pigmentto become .fixed in the fibre so as to produce a. very permanent mark. I

As a practical working example of such a composition, the following maybe used, the proportionsbeing by weight:

80 parts of paracoumarone resin such as Cumar, 20 parts of a fastlithographic ink having a blue color for example, 5 parts of a mineraloil having a specific gravity of 0.800, and 5 parts of Victoriablue Bbase.

I have found it highly desirable that the dusting composition should notconsist of resin alone but should also include viscous and liquidsubstances. For example, the lithographic ink above mentioned consistssubstantially of dried or thickened linseed oil, which is a viscoussubstance, and the mineral'oil above mentioned is a liquid.

By mixing the relatively hard resin with a softer substance orsubstances, a fusible composition is formed which, when powdered to theproper degree of fineness, clings to the moist ink impression so as toform a sharply defined design. I have also found that theproperadmixture of the dyestufi' or of the oil red before mentioned, and thefive parts of mineral oil are replaced by five parts of a nitrc-naphthalene, preferably al pha nitr'o-naphthalene'.

Other pigments and dyestuffs could be used to give colors other than redor blue. @f course, if pigments and dyestufi's are omitted from thedusting composition, a clear and colorless fused layer is formed uponthe printing ink, which as before mentioned may be any suitableindelible printing ink containing fast colors and no substances solublein water.

A large number of different formulae can' lee-employed for the ink andfor the dusting composition em loy'ed in this method to meet variousatmosp erlc and weather conditions.

and for the kind of work for which the transfer is intended. Forexample, the meltingpoint can be adjusted by varymg thequantities of thesofter elements of the before mentioned compositions such as thenitro-naphthalene, the mineral oil, the lithogra hic ink, etc.

en the reverse imprint on the paper 2 has been allowed to set afterfusing, a raised and fusible reverse imprint is formed, and the transfercan then be made in' the ordinary manner by allowiii the reverse imprintto come in contact with the article and then applying heat and pressureupon the top of the transfer by a suitable heated iron or the like.

The transfer is formed upon the article to be marked in exactregistration with the direct'imprint upon the top of the paper.

It is desirable to gently heat the reverse imprint after the dustingcomposition has been applied thereto, and the excess has been removed,so as to fuse thepowder thus retaining it in position upon the imprintor im ression on the paper.

11 making transfers, it has been heretofore customary to print the paperwith a tusible ink. It has also been suggested to print a sheet of paperprovided with a fusible wax coating with an ordinary non-fusible ink,and to then add a resinous ingredient to the saidink, so that the saidink would absorb this ingredient and become fusible. According to thisinvention, ordinary unwaxed paper is printed with ordinary type and inkin the well known manner, and a raised fused surface layer of a fusibletransfer ink composition is then formed on the marking formed with theordinary ink. This surface layer is so brittle that it could not beused" by directly applying it to the paper by the ordinary intaglioprinting process used in connection with ordinary.-fusible; transferinks; A transfer made as before specified can therefore be manufacturedvery quickly and cheaply and without the use of intaglio printingcylinders. Experience has shown that the fusing of the powder causes itto intermix with the ink to a certain extent, which is an additionaladvantage. When the transfer is dusted with the powder, and the surpluspowder is removed, the

impression is somewhat ragged at the edges due to adhering looseparticles of the owder at the edges of the ink.impress ons. However,after the transfer has been heated, the lines of the impression becomesmooth I showing that the powder has been fused an has become intermixedwith the ink so that 'the outlineof the transfer has thenecessarysmoothness. It is only necessary to heat a complish the fusin of thepowder. The transfer can then e though it maybe allowed to standhoursbefore shipment.

I have described a" referred embodiment of my invention but it s clearthat numerous orafew.

changes and omissions could be made w th;

directly shipped, '91- l till) transfer for a few seconds in order toacout departing from. the spirit thereof and I ing a marking formedthereon with ink, the do not 'wish to be limited to the details be-831d. marking having a fused surface coating fore specified. a Ycomprising a resin and linseed oil. I I c1aim:- 3. Atransfercomprising-apaper base hav- 15 5 1. Atransfer comprising a paper base haviiiwa'm'arking' formed thereon with ink, the ing a marking formed thereonwith ink, the 'sald markin having a fused surface coating, said markinghaving a fused non-tacky surthe said sur ace coating including a resin,a face coating comprising a resin and .a visviscous substance andaliquid. v cous substance, the said surface coating be- In testimonywhereof I hereunto aflix my 20 10 ing substantially colorless andtransparent. signatiire.

2. A transfer comprising a paper base hav- .WINTHROP STANLEY LAWRENCE.

